PHILLIPS LEE GOLDSBOROUGH, ESQ., GOVERNOR. 1637

sent, then this act shall take effect from and after the date of
said meeting; but if at such meeting a majority of the mem-
bers then present do not assent, then this act shall not take
effect, but shall be null and void.

SEC. 19. And be it further enacted, That this act shall take
effect from the date of its passage.

Approved April 15, 1912.

CHAPTER 842.

AN ACT to establish a State Laboratory for the production, test-
ing or standardizing of tuberculin, mallein, hog cholera serum
and other biological products.

SECTION 1. Be it enacted by the General Assembly of Mary-
land, That the State Board of Agriculture shall establish, equip
and supervise a biological laboratory for the production, testing
or standardizing of tuberculin, mallein, hog cholera serum and
other biological products needed for diagnosing, preventing, im-
munizing against or curing diseases among live stock in the State
of Maryland, and to investigate and test biological methods and
products that have apparent value in treating diseases among
live stock.

SEC. 2. And be it further enacted, That the director of the
Maryland Agricultural Experiment Station shall be the director
of the State Laboratory for Biological Products, and that the
State Board of Agriculture shall on nomination by the said
director, appoint such persons as may be necessary to carry on
the work of preparing, distributing or using the products of the
laboratroy for the diagnosis, prevention, immunization or treat-
ment of diseases among live stock in the State of Maryland,
and shall fix the compensation for the services of such persons.

SEC. 3. And be it further enacted, That the director of the
State Laboratory for Biological Products may at his discretion
sell to regularly licensed physicians and veterinarians, or charge
for the administration of the products of the laboratory at ap-
proximate cost of the same as may be set from time to time by
the State Board of Agriculture.

SEC. 4. And be it further enacted, That the director of the
State Laboratory for Biological Products shall, at the request
of the State Board of Health, the State Live Stock Sanitary
Board or the State Veterinarian, and for State and public pur-
poses only, pursue such tests or investigations with biological